Mold.



H. L. W. & F. W. BOWLER.

MOLD.

APPLICATION FILED MN. 22. I916.

Patented Dec. 12, 1916.

ms uonTus Prrsks cm, Wynn-moron, n. c.

UFFTF.

HARRY L. W. BOWLER AND FRANK WM. BOWLER, OF CHICAGO, ILLINOIS.

MOLD.

Specification of Letters Patent.

' Patented Dec. 12,19116.

To all whom it may concern:

Be it known that we HARRY L. W. BOWLER and FRANK W. BowLnn, citizens of the United States, residing at 'Ghicago,-in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Molds, of which the following is a specification.

This invention relates to an improved mold which is intended to be used when constructing posts or columns out of cement or the like.

The principal object of the invention is to provide a mold which may be easily set up and taken down and which is so constructed that it will. be very strong when set up and not liable to work loose and thus spoil the column which is being formed.

Another object of the invention is to so construct the mold that the sections may be releasably held in a set up position by temporary means until the permanent means for releasably holding the section in a set-up position are put in place.

Another object of the invention is to provide a mold for forming a column which is so constructed that a hopper may be releasably connected with the top of the body portion of the mold.

Another object of the invention is to so construct the hopper that it may be adjusted according to the height of hopper desired.

Another object of the invention is to provide improved securing bars for the sections and to so mount the'bars that they may be securely held in place.

This invention is illustrated in the accompanying drawings wherein Figure 1 is a side elevation of the mold. Fig. 2 is a transverse sectional View of the mold. Fig. 3 is an enlarged view showing the manner in which the temporary keys hold the sections of the mold together. Fig. 4: is a perspective view of the temporary keys shown in Fig. 3. Fig. 5 is a side elevation of one of the angle bars forming part of the mold. Fig. 6 is a plan view of one of the circular bars which hold the sections of the mold together. Fig. 7 is a side elevation of an angle bar which may be used insteact of the bars shown in Fig. 5;

The hopper shown in Fig. 1 comprises the upper and lower sections 18 and 19 which are provided with angle bars 20 having openings formed therein. Bolts 22 are passed through the openings and when tightened, will securely hold the section of the hopper together. The lower end of the lower section is provided with a spout 23 which is of such size that it may extend into the mold when adjusted to its smallest size. These sections are each formed of two parts, to the adjoining edge portions of which there are secured the angle bars 24: through which bolts 25 may be passed to releasably hold the parts together. It will thus be seen that when the mold is not in use, the hopper may be taken to pieces and stored in a small amount of space.

A collar 18 extends around the upper section 18 for engagement with a supporting frame (not shown).

The body of the mold is formed of semicircular sections or plates 26 to which thereare secured the centrally located T-bars 27 and the angle bars 28 which are secured to the edge portions of the plates 26. The angle bars 28 are provided with rectangular openings 29 and transversely-extending slots 30 which are positioned between the openings 29. These slots 30 may be formed as shown in Fig. 7 or may have a bayonet slot construction as shown in Fig. 5. The arouate strips or bars 31 extend through the openings formed in the "libars 27 and are provided with centrally-cut-out portions 32 so that the arcuate strips may fit close against the plates 26. The end portions 33 of the strips 31 are also reduced as shown clearly in Fig. 6 and are passed through the openings 29 formed in the angle bars 28 with their ends positioned in overla ping relation as shown in Figs. 1 and 2. penings 34- have been provided in the ends of the strips 31 and extend in alinement when the mold is in the setup position so that wedges 35 may be passed through the openings and tightly hold the two plates 26 together. It is desired to have the sections of the mold temporarily held in a set-up position while the wedges are being put in place and therefore the T-shaped keys 36 have been provided. These keys 36 are slidably and rotatably mounted upon the pivot pins 37 carried by the brackets 38 and are intended to pass through the slots 30 as shown in Fig. 3. If the slots 30 are of the bayonet slot type, the keys will be first passed through the outer ends of the slots and then permitted to drop intotheinner end portions where they will be held against slipping out of place. The wedges can then be driven through the openings to tightly bind the sections together and the keys can either be left in place or can be swung to an inoperative po sition. The hopper used in connection with this cylindrical type of mold is of the same construction as that shown in connection with the rectangular mold, the only differ- 'ence being that the sections of the mold are areuate so as to form a circular hopper.

The operation of this mold is as follows: The body portion of the mold is first formed by connecting the plates and the hopper is then mounted upon the upper end of the mold. Cement or any other suitable mixture is then poured into the mold and the mold is allowed to remain in the set-up position until the cement has dried. It is, of course, obvious that after the mold has been filled th'ehop'pe'r can then be removed. As soon as the cement has dried, the wedges can be removed and the sections of the mold taken apart. The mold can then again be set up and another column formed, or if desired, the sections of the mold can be put away in a safe place for storage.

It should also be noted that the angle bars of the two molds may be left unsecured to the plates 26 and that therefore when the mold is not in use, the angle bars do not need to remain "connected with the plates. It should also be noted that the securing strips 31 may also be removed. These molds can therefore be completely taken to pieces and the various parts separated.

We have thus provided a mold which will be very strong and durable and which is so constructed that the various parts which are removable one from another may be securely held in a position to form a knocked-down mold not liable to easily work loose or out of the desired shape when in operation. In order to permit a plurality of sections to be connected to increase the size of the column each section will be provided with angle bars 39 and 39 operating similar to angle bars 20.

lVhat is claimed is:

1. A mold comprising a plurality of sections, angle bars positioned adjacent the adjoining edges of said sections, said angle bars being provided with openings and with slots, keys pivotally connected with certain of said angle bars and passing through the slots of said angle bars to releasably connect the same, strips extending about said mold and having their end portions passed through the openings of said angle bars and having their end portions positioned in overlapped relation and provided with alined openings, and means passing through said openings to securely hold said mold in a set-up position.

2. A mold comprising a plurality of sections, angle bars positioned adjacent the adjoining edges of said sections and provided with cutouts, keys pivotally connected with certain of said angle bars and passing through the cutouts to releasa'bly connect the angle bars, strips extending about said mold and having their end portions positioned in overlapping relation, and means connecting "the end portions of said strips to securely hold said mold in a set-up position.

3. A mold comprising a plurality of sections, outstanding strips positioned adjacent the adjoining edges of said sections and provided with cutouts, pivotally mounted means passing through the cutouts to releasably connect the outstanding strips, bracing strips extending about said mold and passing through the cutouts of the outstanding strips, and means for releasably connecting the end portions of said bracing strips.

In testimony whereof we atlix our signatures in presence of two witnesses.

HARRY L. W. BOlVLER. FRANK M. BOVVLER. lVitnesses THOS. K. FORMAN, CHAS. A. JoRcENsnN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Stl 

